/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.phoenix.parse;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.util.List;
import org.junit.Test;

public class PhoenixRowTimestampFunctionTest {

  @Test
  public void testExpressionWithPhoenixRowTimestamp() throws Exception {
    ParseNode parseNode = SQLParser.parseCondition("(PHOENIX_ROW_TIMESTAMP() = PK2)");
    boolean hasPhoenixRowTimestampParseNode = false;
    for (ParseNode childNode : parseNode.getChildren()) {
      if (childNode.getClass().isAssignableFrom(PhoenixRowTimestampParseNode.class)) {
        assertEquals(0, childNode.getChildren().size());
        hasPhoenixRowTimestampParseNode = true;
      }
    }
    assertTrue(hasPhoenixRowTimestampParseNode);
  }

  @Test
  public void testExpressionWithPhoenixRowTimestampWithParams() throws Exception {
    ParseNode parseNode = SQLParser.parseCondition("(PHOENIX_ROW_TIMESTAMP(COL1) = PK2)");
    for (ParseNode childNode : parseNode.getChildren()) {
      assertFalse("PhoenixRowTimestampFunction does not take any parameters",
        childNode.getClass().isAssignableFrom(PhoenixRowTimestampParseNode.class));
    }
  }

  @Test
  public void testSelectWithPhoenixRowTimestamp() throws Exception {
    SQLParser parser = new SQLParser("SELECT PHOENIX_ROW_TIMESTAMP() FROM xyz");
    List<AliasedNode> nodes = parser.parseQuery().getSelect();
    assertEquals(1, nodes.size());
    assertTrue("PHOENIX_ROW_TIMESTAMP() should parse to PhoenixRowTimestampParseNode",
      nodes.get(0).getNode().getClass().isAssignableFrom(PhoenixRowTimestampParseNode.class));
    assertEquals(0, nodes.get(0).getNode().getChildren().size());
  }

}
